Dev Tools
Regex Tester
Professional online regex testing tool. Real-time match highlighting, multiple flag support, built-in common regex templates to help developers quickly validate and debug regular expressions.
All regex matching runs entirely in your browser. Your test data is never uploaded to any server.
Flags:
Common Regex Examples
Frequently Asked Questions
- Supports g (global), i (case-insensitive), m (multiline), and s (dotAll, makes . match newlines) - all standard JavaScript regex flags.